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| author | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-02-07 20:28:52 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-20 13:35:12 +0300 |
| commit | 5620eeb379d100f6b6879540de1fbf8fd80a6e56 (patch) | |
| tree | adf4c8cb29cdc0a16b8ffdc18a1ab2d293ecbc50 /include/linux/trace.h | |
| parent | 41afd2473dc432d5dbfa253ac5c507bdfe215ab6 (diff) | |
| download | linux-5620eeb379d100f6b6879540de1fbf8fd80a6e56.tar.xz | |
tracing: Add trace_array_puts() to write into instance
[ Upstream commit d503b8f7474fe7ac616518f7fc49773cbab49f36 ]
Add a generic trace_array_puts() that can be used to "trace_puts()" into
an allocated trace_array instance. This is just another variant of
trace_array_printk().
Link: https://lkml.kernel.org/r/20230207173026.584717290@goodmis.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Stable-dep-of: 9d52727f8043 ("tracing: Have tracing_snapshot_instance_cond() write errors to the appropriate instance")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux/trace.h')
| -rw-r--r-- | include/linux/trace.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/trace.h b/include/linux/trace.h index 80ffda871749..2a70a447184c 100644 --- a/include/linux/trace.h +++ b/include/linux/trace.h @@ -33,6 +33,18 @@ struct trace_array; int register_ftrace_export(struct trace_export *export); int unregister_ftrace_export(struct trace_export *export); +/** + * trace_array_puts - write a constant string into the trace buffer. + * @tr: The trace array to write to + * @str: The constant string to write + */ +#define trace_array_puts(tr, str) \ + ({ \ + str ? __trace_array_puts(tr, _THIS_IP_, str, strlen(str)) : -1; \ + }) +int __trace_array_puts(struct trace_array *tr, unsigned long ip, + const char *str, int size); + void trace_printk_init_buffers(void); __printf(3, 4) int trace_array_printk(struct trace_array *tr, unsigned long ip, |